Home / 21,103.77-31,647.95-9,249.39

Finding the Fourth Proportional to 21,103.77, 31,647.95 and 9,249.39

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Solution

The fourth proportional to 21,103.77, 31,647.95 and 9,249.39 is: 13,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.77 : 31,647.95 = 9,249.39 : x
  2. Step 2: Convert to fraction form
    21,103.77/31,647.95 = 9,249.39/x
  3. Step 3: Cross multiply
    21,103.77x = 31,647.95 × 9,249.39
  4. Step 4: Simplify right side
    21,103.77x = 292,724,220.69
  5. Step 5: Solve for x
    x = 292,724,220.69/21,103.77
  6. Step 6: Final answer
    x = 13,870.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.